In fruit flies, the gene for eye color is located on the X chromosome, and the red eye allele is dominant over the white eye allele A female fly with genotype XRXr is mated with a male fly with genotype XrY. Which statement below best describes the expected outcome of this cross?

b. The chance of an offspring having white eyes is 50%.

Explanation:

a. The chance of an offspring having red eyes is 75%.

b. The chance of an offspring having white eyes is 50%.

c. The chance that a male offspring will have white eyes is 0%.

d. The chance that a female offspring will have red eyes is 100%.

Gene for eye color is X-linked.

Red allele R is dominant over white allele r.

female is crossed with male:

  x     =  

50% of the offspring has red eye () while the remaining 50% has white eye ().

Hence,

The chance of an offspring having white eye is 50%

The chance of an offspring having red eye is 50%

The chance of  a male offspring having white eye is 50% and not 0%

The chance of a female offspring having red eye is 50% and not 100%

The correct option is b.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

not too sure but maybe in the hot springs.